Biology 9700: ENZYMES Topical Past Paper Questions
Cambridge AS & A Level Biology (9700) past-paper questions on ENZYMES, free. This topic is frequently examined across 28 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Cholesterol oxidase is an enzyme produced by some species of bacteria. This enzyme is widely used in research, in diagnostic laboratories and in industry. A student carried out an investigation into cholesterol oxidase produced by a soil-living bacterium. The bacterium secretes t…
Small interfering RNA (siRNA) is a short length of double-stranded RNA (dsRNA), approximately 21 to 25 nucleotides long. siRNA helps to regulate protein synthesis in cells. (a) Fig. 3.1 is an outline summary of one way in which a primary transcript can be processed to produce a m…
A respirometer is a piece of apparatus that can be used to measure the rate of respiration of living tissue such as germinating peas. A simple respirometer is shown in Fig. 6.1. Fig. 6.1 A student carried out an investigation to determine the effect of temperature on the rate of…
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